package com.zrrd.homework._0318_0324.h2;

/**
 * @author WanJl
 * @version 1.0
 * @title Main
 * @description
 * @create 2024/3/24
 */
public class Main {

    public static void main(String[] args) {
//        Car c=new Car();//name==null
//
//        Train t=new Train("托马斯");
//        Aircraft a=new Aircraft("乐迪",5);
        Vehicle v=null;
        System.out.println(v);
    }
}
